rogers



(team Para Na. 75,703, mamma 17,' 1868. i

IMPROVBD lTUYIEIRE.

dlp Stimuli maar ti imitan tsttrtg'ttnit mit mating um' nf tige time ro ALL WHoM 1T MAY ooNcnnN:

v Beit' kn'own that I, JON'W. ROGERS, of Decatur, in the'county of Macon, and State of Illinois, have invented certain new and useful Improvements in {Baye-res; and I do hereby declare `the followingto be a full, clear, and exact'description of the same, Vreference being` had to the accompanying drawings, making a part of .this specification, inwhichi i i Figure represents a perspectiveview of the tuyere.

Figure 2 represents a longitudinal vertical section through Athe same and Figure represents a vertical transverse section. I f

Similar letters of ret`erencewhere they occur in the separate figures, denote like parts in all of the drawings.

. I am aware that in tuyeres, the top hasbeeri raised up so as to bring the draught-issues above the surface `where the ashes and lightcinders deposit, but only at the opposite sides.v This causes a dead space'or eddy below where theA cross-blasts meet, and a consequent slack in the re where it is needed most. The diihculty in makinga blast-opening in Vthe bottom of the deprcssionis that the ashes and flue cinder choke-it up. I l My invention -consists in` combining with the sideissues orvcross-blast, a central issue slightly elevated, Vso thatV the ashes 4and c indenyrill roll oif from the blast-issue in the depression, and I thus avail myself of all the' advantages of centrallandsidedssues or blasts', without encountering the diiiicultiesgincident to clogging or choking in a central-sunken issue.

, And my invention further `consists in theuse 'of welghted, self-acting valves, so arranged, in connection with the'body lof the tuyere, as to admit'air enough to keep'the fire going when the blast is olf, and to allow the accumulation of ashes,q &c.,in the interior to drop out. i To ,enable others skilled in the art to make and use my invention, I will proceed to describe the same with reference to the drawings. 4

v The tuyere may becast in two parts, viz, an upper part, A, and an under part, B, the two parts being held together by' theirlianges a t, bolted together. The line of'V partition of the two parts may pass centrally 4through the Winder blastfpipe C, thus-making the moulding and casting ofthe two parts very simple. The interior of the`under'portion is ot' a4 pot-shaped forni, and it,-a's well as the interior of the upper' portion-has no sharp or angular -liues to impede the force of the blast through .the tuyere. The top'of the upper`portion A is swelled or ridged up, dr crowned as shownjtt c, with a central depression across the crown or valley, as at` d, and in the bottom of this valley there is 'a raised portion, e, through which the central blast or issue comes by theopeningftherein. The lightcinders and ashes will roll from the apex e into the lower portions d, and thus prevent this central-blast opening from getting choked up. The side-blasts come through openings g g, in theridged-up portions c c ofthe top, A, and/I thus get both vertical and lateral crossfblasts'. At the bottoni4 of' thennder portion B'through which there is an opening,.h, there is hung, as atfz', a Weighted or overpoised valve, j, which closes and holds closed said opening, until the accumulated 'ashes or light cinder inside is sufficient to open it against the actionothc weight or overpoisc lc, ,or until aidedby thel user to so open, for the purpose of allowing the ashes, cinder, 85e., to drop out, and when relieved thevalveimmediately closes again. In orthrough the side or upper'portionof the part B; there is also an ripening, l, controlled by a weighted-valve, m, pivoted at n. This valve, by its counterpoise o, stands open until the blast is put on, and then the force of the blast closes it andheldsibclosed, as seen by the red lines at fig. 2. When the blast is shut o, the valve swings and discloses the opening l', through which air passes to keep the fire alive whilst the Ablast is oii. The ridged-up 'portions c c,-inst ead of terminating at or immediately over the blast-openings g g, may project' over and beyond said openings, so that they may serve, as seen at c c', as a protection to said blast-orifices, in keeping the ashes and cinders out of them and' thus projected over the blast-jets, they'serve as directors to the blast, throwing'thejets of air and the amemore into or towards a common centre.

vHaving thus' fully described my invention, what I claim therein as new, and desire to secure byLctters i Patent, is i 1. vflhe ,upper portion A ofthe tuyere, constructed as described, and having the blast-openings arranged therein, substantially asset forth.' Y A 2.l I claim also the pot-shaped under portion of the tuyere, having the weighted valvesjm, larranged upon itfas and for the purposehcreia-described'and'represented. l

i JOHNr W. ROGERS. Witnesses: l

G. R. STEELE, A C( A.- Mssrnason. i, 

